To be serious, if I could: There are rules of physical distance, and there are meanings to breaches of those rules.

People of course do occasionally touch each other. But those touches have important communicative purposes precisely because of the general rule that we don’t touch each other.

When that rule is obliterated, and hugging becomes something you merely do to “Say Hello With Your Arms,” then the special meaning of a real embrace, or comforting touch of the shoulder, is likewise obliterated.